<h1 class="pgc-h-arrow-right" data-track="3" > athlete ice "spell"</h1>
Click on the link to reveal how the ice for the Winter Olympics came from?
At the 2018 Pyeongchang Winter Olympics, the last day of the figure skating team competition, Russia's famous Koryada fell, and the second jump was wrong again.
Canada's Chen Weiqun, who is also a three-time World Champion, is still a series of mistakes.
The Japanese players and the American players all made mistakes, a total of 5 people, and 4 people made big mistakes. The same was true at the last 14-year Sochi Winter Olympics, when the men's singles players collectively made mistakes, so the media said that this was a reappearance of the Sochi spell.
In fact, the first day of the team competition, also the United States, Canada, Russia, Japan, China, all the players are wrong, the pair skaters in the Chinese player Yu Xiaoyu fell, a down to say, on the ice when the foot feeling is not very good!
Got it! Everyone fell, which only showed that this ice really couldn't work.
<h1 class="pgc-h-arrow-right" data-track="19" How much do you know about the ice door >? </h1>
To say that people's ice is not good, in the same field, short track speed skaters have very good results, frequently breaking Olympic records.
The Chinese head coach also praised the ice quality of the venue, which is very good and has little resistance, which is very helpful for breaking records.
So how did the figure skaters fall so badly? The doorway to this comes out.
Sochi in 14 years and Pyeongchang in 18 years were both problematic, and it was customary for short track speed skating and figure skating to be played on the ice of the same venue.
However, the requirements for the ice surface of the two projects are not the same, and the temperature required for the ice surface of the figure skating project is about minus 4 degrees, while the short-track project requires minus 6 to 7 degrees.
Figure skating needs to be relatively soft on the ice surface, so that the ice knife can eat hard, can resist the gravity of rotation and jumping, if it is too hard, it is easy to crush.
Short track events require ice cubes to be relatively hard, so that athletes can give better support, speed can be fast, if it is too soft, the ice knife is easy to trap in.
In order to take care of these two events, many venues will compromise the temperature and control it between 4.5 and 5 degrees, and the result is that the short track players are too soft and the figure skaters are too hard.
The Pyeongchang Winter Olympics venue is equipped with an ice-making system that can be adjusted, and the technology content is not low, but the technical standard is one thing, and the feeling on the feet of the participants is another thing.
<h1 class="pgc-h-arrow-right" data-track="34" > high-tech for the 2022 Beijing Winter Olympics</h1>
The two events of the Beijing Winter Olympics were held at the Capital Gymnasium.
Today, on April 3rd, the test activities of these two projects were held, and the temperature conversion of the venue is the focus of the test content, and the effect is very good, said Alexander Reconin, vice president of the International Skating Union, as a venue for the Winter Olympics, it is fully prepared.
How did Beijing do it? Here, the world's most cutting-edge high-tech environmentally friendly ice making technology is used - carbon dioxide transcritical direct cold ice making.
First of all, Olympic ice making is not a frozen ice cube in our refrigerator at home, it is much more complicated.
Step 1 is to extract pure water, to remove the solids dissolved in the water, salt, minerals must be removed, this is very understandable, the purer the water, the smoother and more stable the ice surface.
Next, a year before the Olympic Games, we will start to spray pure water layer by layer on a concrete track or skating rink, spray dozens or even hundreds of layers of extremely thin ultrapure water, and then freeze it through a rapid freezing system.
The carbon dioxide used on a large scale at the Beijing Winter Olympics this time is actually a refrigerant of the elderly level, and carbon dioxide has been used as a refrigerant as a refrigerant as early as more than 100 years ago in Europe.
But then synthetic refrigerants appeared, and everyone found it to be better to use, because the critical temperature was high and easy to liquefy, and carbon dioxide was replaced.
<h1 class="pgc-h-arrow-right" data-track="58" why do > use centuries-old technology? </h1>
So why is the Beijing Winter Olympics still moving this old technology from more than 100 years ago? The reason is simple, synthetic refrigerants are very familiar with Freon, it will destroy the earth's ozone layer, will exacerbate the greenhouse effect.
Therefore, China has eliminated the refrigerant Freon R12, which has serious damage to the ozone layer, as early as 2010; by 2030, the refrigerant Freon R22, which has a slight destructive power to the ozone layer, China will also be completely eliminated.
The Beijing Winter Olympics have become the first large-scale use of carbon dioxide refrigerants in history, which is not only environmentally friendly, but also ensures that the temperature across the ice rink is more uniform.
<h1 class="pgc-h-arrow-right" Data-track="64" Will the ice cut by the > ice knife affect the player's game? </h1>
Of course, it will affect the performance of the players, and after the short track speed skating competition, there are only two and a half hours in between.
The first is to clear the ice car to clean the ice surface, and then the ice boys will carry buckets filled with ice slag on the field, they will patiently use scrapers to remove the ice slag, patch the holes left by the athletes, repair the ice surface, and adjust the layout of the referee seat and the surrounding landscape.
Then the whole ice rink began to heat up, about ten minutes, the temperature reached the standard, the ice car was on the ice again to adjust the ice surface, and when the ice car was evacuated, the surrounding cleaning work was also completed, and the entire venue was converted from a short track speed skating field to a figure skating field.
#Beijing 2022 Winter Olympics Countdown to 100 Days ##Ice#Figure Skating##Short Track Speed Skating ##北京冬奥会 #